Mold units and mold for concrete work.



0. P. WETMORE. MOLD UNITS AND MOLD FOR CONCRETE WORK.

APPLICATION FILED SEPT. 23, 1909.

Patented Dec. 15, 1914.

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nc 009 on o a o n o oaoanoo oou l l I I l I l i x a a o a a o o o luooccocuu lwuewtoz WWW 01am THE NORRIS PETERS 60. PNOfO LIN-10.. WASHINL-lu/v, u. l,

CHARLES P. WETMORE, OF MILWAUKEE, \IVISGON SIN.

MOLD UNITS AND MOLD FOR CONCRETE WORK.

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Specification of Letters Patent.

Patented Dec. 15, 1914.

Application filed September 23, 1909. Serial No. 519,151.

To all whom it may concern:

Be it known that l, Crmnnns P. /VnrMonn, a citizen of the United States, residing at Milwaukee, county of Milwaukee, and State of Visconsin, have invented new and useful Improvements in Mold Units and Molds for Concrete lVork, of which the following is a specification.

My invention relates to improvements in mold units and molds for concrete work.

"he object of my invention is to provide a mold unit adapted to be used in sets of like units for all ordinary purposes in concrete work and may be employed in connection with a comparatively few special units having peculiar or unusual forms for the formation of almost any desired structure.

In the following description, reference is had to the accompanying drawings, in which Figure l is a plan view of a concrete molding unit embodying my invention. Figs. 2 and 3 are side and end views respectively of the same. Fig. 4 is a transverse sectional view drawn centrally through three connecting units. Fig. 5 is a plan view of one form of special unit. Fig. 6 is a side view of another form of special unit. Fig. 7 is a plan view, showing an arrangement of like units to provide a mold for a column. Fig. 8 is a plan view of the top of a column, showing an arrangement of the sections adapted to serve as molds for floor beams at the top of the column shown in Fig. 7. Fig. 9 is a side view of the same.

Like parts are identified by the same reference characters throughout the several views.

Each of the ordinary units comprises a six sided structure having an inner wall A, side and end walls B and C respectively and a top wall D, each of these walls being provided with small apertures E, which apertures are located comparatively close together and at regular intervals. The top wall D is provided with a large central aperture F through which the hand and arm may be inserted for the purpose of adjusting fastenings.

With a unit constructed as described, it is obvious that another like unit may be applied to any one of its six sides and secured thereto by fastenings G passed through registering holes in the respective units, as shown in Fig. 4, and a great variety of forms may be constructed from these units and without using any auxiliary units whatever. For example, a series of four such units may be grouped as illustrated in Fig. 7 and secured together in such a manner as to produce a mold for a column. These groups may be piled one on top of another, as illustrated in Fig. 9, and may, of course, be secured together by fastenings passing through registering apertures E in the abutting surfaces of the walls of the respective units.

At the top of a column, it is frequently desirable to so shape the mold as to provide floor beams covering the top of the column and extending in four directions therefrom. It is possible in such cases to use the mold units shown in Figs. 1 to 4 inclusive, but I preferably employ for such purposes the special mold units shown in Fig. 5. This unit has one end C. inclined from top to bottom. These special units may be placed on edge as shown in Fig. 8. Eight of such units are employed to constitute the side walls of the beam molds, the ends C of the pair of units at each corner of the column being brought into registry with each other with the inner wall A. forming the side walls of the mold and the outer walls D being exposed on the exterior. A series of mold units of the character shown in Fig. 1 will then be used to form the bottoms of the beam molds, these units being placed with the side A uppermost and secured to the lower side wall B of the special units by fastenings of the character shown in Fig. 4. It will, of course, be understood that the abutting walls C will be also secured together by such fastenings.

Referring to Fig. 7 it will be obvious that a column of any desired size may be formed by adjusting the various units into greater or less proximity to each other and by using additional units where necessary. It will also be obvious that in a structure of the character shown in Fig. 8, the beams may be made of any desired width or height according to the number of units employed and their relative arrangement. Additional units of the character shown in Fig. 1 may be arranged exterior to the units, forming the beam molds and secured to the upper margins or near the upper margins B of the special units to form supports or false work for the floor, these units being also employed with the walls A uppermost and with the side Walls 1 secured by the fastenings above referred to to the walls D of the special units. A floor H formed upon these surfaces isillustrated in Fig. 9.

Where rounded margins are desired, the

form of unit shown in Fig. 6 may be em ployed. In the unit shown in this View, the bottom wall A, top wall D, end Walls C and one of the sidewalls B aresubstantially the same in form as the corresponding parts of the unit shown in Figs. '1 to l inclusive, but the other end wall I) is curved, whereby the use of units of this character will produce rounded surfaces. This unit is therefore particularly adapted to be used at the angle formed by the side wall of a beam with the under surface of a floor.

It Will be understood that the portion of the wall D of each mold .unit having the aperture F, will always be exposed on the exterior, and this wall may therefore be termed the outer wall,-wh-ile the wall'A will ordinarily form the inner wall or face of the mold and may therefore be termed the inner wall of the unit, although the side walls B and C or the portion of the outer wall D may in some relations form the ner face or a portion of the inner face of a -mold, according to the position in which the units are adjusted with reference ;to each other, the terms bottom and top, inner and outer, or side and end, as applied to these walls, are therefore mere relative :terms, or terms of description and not of limitation. It is essential, however, that the opening F be exposed to the exterior, since otherwiseaccess could not be had to the fastenings, but it is not absolutely essential that this opening should be formed in what has been herein termed the outer wall, viz. the wall D, for it is obvious that this opening might be formed in one of the vsocalled side .or end walls.

Having thus described my invention, What I claim as new, and desire to secure by Letters Patent, is-

1; A moldunit for concrete Work comprising an inner wall, an outer wall, and connecting side walls,each of said walls being provided with perforations adapted to receive connecting fastenings, and one of the walls having an opening adapted to permit the insertion of fastenings through said perforations from the interior.

2. A. mold for concrete work, comprising a series of units, eachconsisting of an open pol-vsided box having walls on all sides perforated at intervals to receive connecting fastenings, the walls ofeach unit being arranged :to abut thoseof other units and connected by suitable fasten-ings, some of said units differing in shape from those ad acent thereto extending through the perforations substantially as described.

In testimony whereof I afiix my signature in the presence of two witnesses.

CHARLES P; WETMORE.

Witnesses:

LEVERETT C. lVI-IEELER, 0.11. ERWIN.

001110: of thls patent may be obtained for five cents each, by adgiressing the Commissioner of Patents,

Washington, 13.0. 

